The second you start the 7-Methods of use with the Inertia Wave, your body automatically engages the posterior chain.
The Inertia Wave is fundamentally different from battle ropes. After playing with one for a few days, you will agree. I think these elastic tubes have a Q Factor of ~5 (depending on the tension of the lines). Battle ropes essentially have no stored energy and thus a very small Q Factor -- less than 1. In other words, the attractiveness of elastomere tubing of the Inertia wave over battle ropes (or chains) is the amount of stored energy in the tubes themselves. The "inertia wave" tubes are alive: you move the tubes; the tubes move you. I like it. Jumping off the ground while the tubes are oscillating gives a trippy feeling.
This not only corrects postural imbalances, it will relieve tight protracted shoulder girdle. The Inertia Wave has a constant pull and pressure based on the elasticity of the elastomer. The pull is constantly challenging the posterior chain to stabilize you from the start. The body inertia you create by disrupting the tubes engages the deep stabilizers and core musculature. (I call it pebble in a puddle) The force originates in and eminates out. When utilizing the 7-methods it increases your metabolic control, energy levels which in turn challenge those systems need to do quick, reflex, intense, bursts of energy in short 3-minute window durations. By performing the 7- Methods segueing from one method to the next, cognitively challenges proprioceptors for greater balance, giving you stronger proximal trunk stability.
Battle Ropes have the environment to constantly lift and slam abruptly thus challenge the tissue tension & end range of the muscles.
With Battling ropes you need to engage outer muscles just to assist during the lift and slam. Over time Battling Rope training increases tissue tensions thus creating pain- because your locked in one position the entire time. Inertia Wave touches on the quality of rhythm, as opposed to the battling ropes where you just muscle it. The Inertia wave gives you the opportunity to relax more, and focus on your breathing and positioning of your body in all planes of motion vs to muscle it up and down which is the case of many athletes.
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If the Inertia Wave it's not the most amazing Metabolic conditioning device/tool in your toolbox of training supplies today - Simply return it! Let someone else become SUPER-HUMAN!